How to Convert a String to an Enum in C#?

In the C#, the string is converted into enumeration

Pay an enumeration from the string

When processing the HTML Select tag with enumeration value, you need to convert the selected string value to the corresponding enumeration value. In C#, the preferred conversion method is

. Enum.TryParse

Enum.TryParse("Active", out StatusEnum myStatus);

For .NET CORE and .NET Framework 4.0, it required longer grammar:

StatusEnum myStatus = (StatusEnum)Enum.Parse(typeof(StatusEnum), "Active", true);

Customized enumeration analysis expansion method

For the sake of convenience, you can create a custom extension method to simplify the analysis process, such as:

public static T ParseEnum<T>(string value) => (T)Enum.Parse(typeof(T), value, true);

This extension method allows you to write:

StatusEnum myStatus = ParseEnum<StatusEnum>("Active");

Processing invalid enumeration value

In order to process the string value is not an effective enumeration value, you can add silent recognition to the

method: ParseEnum

public static T ToEnum<T>(string value, T defaultValue)
{
    if (string.IsNullOrEmpty(value)) return defaultValue;
    T result;
    return Enum.TryParse<T>(value, true, out result) ? result : defaultValue;
}

This allows you to use the following syntax:

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